Steam-gage



Patented May 26, 1885.

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STEAM GAGE.

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(No Model.)

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By Afforney arM (wd N, PETERS, Phclouthogmphlm Washington, 0. c.

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GEORGE XV. BROWN, OF MANSFIELD, OHIO.

STEAM-GAGE.

$PECIFICATION forming art of Letters Patent No, 318,691, dated May26,1885.

Application filed February 18, 1885. (N0 model.)

To all whom, it may concern:

Be it known that I, GEORGE W. BROWN, a citizen of the United States, anda resident of Mansfield, in the county of Richland and State of Ohio,have invented certain new and useful Improvements in Steam-Gages, ofwhich the following is a specification.

My invention relates to an improvement in steam-gages, the object beingto provide a new and novel arrangement of devices for conveying thepressure of steam from the boiler to the diaphragm, and also to providemeans for allowing the escape of the condensed steam when the gage isnot in use for the purpose of preventing the freezing of such and injuryto the diaphragm.

\Vith these ends in view my invention consists in certain novel featuresof construction and combination of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 represents my improvement invertical section. Fig. 2 is a section on the line :10 0c of Fig. 1.

A represents a casing, provided on its upper edge with the flange a,fitting within and seated on the gage casing or box B, being securelyheld in place by means of the screws b. In the upper end of this casingA is formed the annular chamber O, the upper portion beingscrew-threaded and formed with shoulders c, on which rests a metalplate, D, provided with the opening d. Over this plate D fits thediaphragm F, made of steel or other desired material, and between whichand the plate D is inserted the metallic ring or washer E, forming asteam-space, 0, below the diaphragm, the latter being retained in itsposition by the screw-threaded ring f, fitting down thereon. If desired,the chamber 0 may be formed with a partition, 0, provided with anopening, 0 allowing the chambers communication with each other. Into oneof these two chambers leads the passage G, formed in the casing A, andcommunicating with the boiler, said passage conveying the live steamthrough the partition 0 and plate D to the diaphragm, and by exerting apressure thereon operates suitable mechanism within the gage-box.

In the side of the casing A fits the screwplug H, serving as a bearingfor the valvestem 1, passing centrally through it and provided on itsinner end with the valve J, for

opening or closing the passage G, and provided onits outer end with thehand-wheel K. On the end of said plug H fits a cap, h, for forming asteam-tight joint. In the opposite side of the casing A fits thescrew-plug N, provided with a port, L, leading from the chamber 011 theopposite side of the partition 0, said passage L communicating with thepassage G through the passage M.

In the opening 2' fits the valve-stem O, the forward end thereof beingprovided with a valve, P, adapted to open and close the pars sage L, thestem being of such size that the steam can easily circulate around itand escape into the open air through the opening 6, the opposite end ofthe stem being provided with a hand-wheel. It will now be readily seenfrom the above description that when the gage is not in use the valve Jmay be closed and the valve 1? opened, which will allow all the steamwithin the casing A to escape, thereby relieving the diaphragm of thepressure, and allowing it to assume its normal position, and alsopreventing the steam in cold weather from freezing thereimand therebyinjuring thediaphragm. If it is desired to clean the chamber 0 of anysediment, both valves are opened and the steam rushing through thechamber will force all such sediment out through the passages L and i.

My invention is exceedingly simple in con struction, is of few parts,and can be manufactured at a small initial cost.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a casing provided with a steam-chamber, of aplate secured in said casing over the chamber and provided with anopening, a diaphragm secured above the plate, a washer located betweenthe plate and diaphragm, forming a chamber between them, said casingbeing provided with an inlet and outlet passage connecting with thesteam-chamber, and valves for opening and closing said passages,substantially as set forth.

2. The combination, with the casing having a steam-chamber formedtherein, of a plate secured above the chamber and provided with anopening, a diaphragm secured above the plate With a steam-space betweenthem, said casing being provided with' an inlet and outlet to thechamber, and with a passage connecting them, and valves for opening andclosing said inlet and outlet, substantially as set forth.

3. The combination, with the casing A, provided with the chamber 0,having the partition 0, and passages G, L, and M, of the plate D, WasherE, diaphragm F, and valves .for operating the passages G and L,substantially as set forth.

4:- The combination, with the casing A, provided with the chamber 0 andpassages G, L,

land and State of Ohio, this 30th day of Jan- 20 uary, A. D. 1885.

GEORGE WV. BROWVN.

Witnesses:

THOS. E. BARROW, J. P. HENRY.

